Jetta GLX V6-2.8L (AFP) (2002)
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Check resistance for sensor heater at connector to oxygen sensor terminal 1 + 2.
Specified value: 6,4...47,5 Ohm (at room temperature)
If specified value is not obtained:
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Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-:
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Vehicles with engine code AFP, item 9.
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Vehicles with engine code BDF, item 13.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan
Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If specified value is obtained:
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Check Ground (GND) activation of oxygen sensor heater.
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Connect test box to control module wiring harness, connect test box for wiring test.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool
Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
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Check wires between test box and 4-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Terminal 2 + socket 63
Wire resistance: max: 1.5 Ohm
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Also check wires for short circuit to B+ and Ground (GND).
Specified value: infinite Ohm
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Check wire between 4-pin connector terminal 1 and Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max: 1.5 Ohm
If no malfunctions are found in wires:
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Replace Motronic Engine Control Module (ECM) -J220-.